About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
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Ultrafine-grained and Heterostructured Materials (UFGH XI)
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Presentation Title |
Fracture and Ductility of Nanostructured Molybdenum–copper Composites |
Author(s) |
Anton Hohenwarter, Katharina Schwarz, Julian Rosalie, Stefan Wurster, Reinhard Pippan |
On-Site Speaker (Planned) |
Anton Hohenwarter |
Abstract Scope |
Mo–Cu alloys are nowadays frequently used in high-power electrical applications, such as heat-sinks. By means of severe plastic deformation such alloys can be transformed into high strength nanocomposites. With focus on the damage tolerance of such composites this alloy type provides the possibility to analyze the fracture behavior of an intrinsically brittle (Mo) and ductile (Cu) UFG materials. In this work the fracture behavior of liquid-metal infiltrated Cu30Mo70 subjected to high pressure torsion was investigated. Along with the grain refinement a re-orientation of the individual constituents parallel to the shear plane takes place having a strong impact on the fracture properties. The relation between the microstructural evolution and changes in the fracture behavior will be discussed. In addition, a comparison to existing results from other high strength materials, such as pearlitic as well as duplex steels is made. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume |